Window-cleaning device



W. H. A. BROWN.

WINDOW CLEANING DEVICE.

APPLICATION FILED MAR. 10, 1921.

1,41L9,856@ Patentefi June 113, 1922.

M5272 awem I W VIILLIAIVI H. A. BROWN, OF CHICAGO, ILLINOIS, ASSIGNOR O1 ONE-HALF '10 HENRY G. CLARK AND ONE-HALF T0 JOHN H. BENTLEY, BOTH OF CHICAGO, ILLINOIS.

WINDOW-CLEANING DEVICE,

Application filed March 10, 1921.

To (6Z5 whom it may concern:

Be it known that I, WILLIAM H. A. BROWN, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in lVindow-Cleaning Devices, of which the following is a specification.

My invention relates to window cleaning devices, and has for its principal. object the provision of a. new and improved construction which will be highly eflicient in use.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

Fig. 1 is a side elevational view of my invention;

Fig. 2 is a front elevational view of the rotatable disc embodied in my invention;

Fig. 3 is a sectional detail taken substan tially on line of Fig. 1;

Fig. 4 is a sectional detail taken substantially on line 1-4. of Fig. 2; and

Fig. 5 is a fragmentary rear view of the rotatable disc showing one of the pad-retaining members embodied in my invention.

The preferred form of construction, as illustrated in the drawing, comprises a hen dle 6 formed of any suitable material, having a motor 7 swingingly mounted on one end. Rigidly fixed to one end of a shaft 8, of the motor 7, is a metallic disc or support 9 provided with a flange 9, the outer surface of which is covered with a removable cleaning pad 10. The pad 10 is preferably formed in the shape of a cap and arranged to fit over the periphery of the disc 9 and seated against said flange. A plurality of lugs 11 are integrally formed on the inner surface of the disc 9 and through each of said lugs, a wire member 12 is pivotally mounted. The wire 12 is formed of spring steel, having one end formed in the shape of a claw and arranged to retain the pad 10 in position on the disc 9. The other end of the wire 12 engages the inner surface of the disc 9 arranged to act as a resilient spring when the other end of the wire 12 is raised out of operative position. As illustrated in Fig. 3 of the drawing, the base of the motor 7 is Specification of Letters Patent. Pafggnfggd J 13 1922 Serial No. 451,341.

rigidly lined to a supporting head let provided with a handle receiving socket 15 integrally formed thereon and swingingly mounted on the handle 6 by means of a detachable cap 1'7 provided with an annular groove 18. Positioned in the groove 18 isa split ring 19 secured to the head 14 by means of screws 19 retaining the cap 17 within the socket 15.

in operation the pad 10 rests freely against a window pane or the like and by firmly holding the handle 6, the pad 10, which is rotated by the motor 7, is guided and moved over the surface of the said window pane until cleaned. The rotation of the pad 10 is so great that dust, dirt or the like on a window pane will be speedily and easily removed, giving the glass a high polish. lVhen the pad 10 is worn down by raising the claw-shaped wires 12, the said pad can be easily removed and a new pad replaced.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of the construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a window cleaning device comprising a supporting member; an abrasive covering carried by said member; and means comprising claw shaped members carried by said supporting member for holding said covering on said member, said claw shaped members being yieldably held in operative engagement with said covering by the en gagement of one end of each of said claw shaped members with said support, substantially as described.

2. In combination with a cleaning device having a supporting member; a flange formed on the periphery of said supporting member; a covering mounted on said member and seated against said flange; aligned lugs extending laterally from said member; and an angularly bent wire member pivotally mounted on each of said lugs, one end of said wire engaging the side of said member and normally holding the other end of said wire in engagement with said covering substantially as described.

3. In a window cleaning device, the combination with an operating handle and a motor mounted thereon, of a supporting member revolvably mounted on the shaft of said motor; a flange formed on the periphery of said member; a covering mounted on said member and seated against said flange; and fastening members pivotally mounted on said supporting member and engaging said covering -for holding said covering on said support, the covering engaging ends of said fastening members being yieldably held in engagement With said covering by the engagement of the opposite ends of said fastening members With said support.

at. In a window cleaning device comprising a supporting member a flange formed on the periphery of said member; a fabric pad mounted on said member and seated against said flange; and fastening members pivotally carried by said supporting member for retaining said pad in position on said supporting member, the pad engaging ends of said fastening members being held in operatire engagement with said pad by the engagement oi the opposite ends of said members with said. supporting member, substantially described.

5. in a window cleaning device, the combination with an operating handle, of a cap on one end of said handle; a support mounted to swivel on said cap; a motor carried by said support; a support carried by the shaft of said motor, there being an annular flange formed on the periphery of said second named support; a removable cleaning element mounted on said second named support and seated against said flange; and oppositely arranged means carried by said second named support and yieldably engaging said cleaning element for retaining said element on said second named support substantially as described.

In testimony whereof I have signed my name to this specification in the presence 0t two subscribing witnesses.

WILLIAM H. A. BROWVN. Witnesses:

JOSHUA R. H. Porrs, FREDA C. APPLETON. 

